The verbs communicate, contact and connect are all related to communication in some way, but conduct seems to be a bit different in meaning. It’s best to look at the definitions and some examples!
*Please note that the following list is not complete. All these verbs have more meanings, however, I wanted to focus on the ones that have something to do with the act of communicating.
exchange or share information, feelings, opinions
- If husband and wife can’t communicate with each other, they should ask a friend or a therapist to mediate between them.
- How did you communicate with people in China?
talk or write to someone (in order to communicate)
- Please don’t try to contact these criminals. They’re extremely dangerous.
- I’ve been trying to contact Janet all day, but she’s not answering her phone.
make a link between people
form a good relationship with someone
- Facebook helps you connect with your friends.
- We went out on a date, but unfortunately we didn’t really connect.
lead or guide a group of people
do a particular activity (research, experiment, survey)
behave in a certain way
- Mary conducted us around Camden Lock Market.
- They haven’t conducted enough research on the possible connection between mobile phones and cancer.
- Everyone was impressed by Princess Kate. She conducted herself with so much grace and dignity.